Physics

Problem

A block is attached to an ideal horizontal spring. When the spring is stretched by

7.5\,\text{cm}

, the spring exerts a restoring force of

4.5\,\text{N}

. What is the spring constant of the spring? a)

67\,\text{N/m}

6.0\,\text{N/m}

60\,\text{N/m}

45\,\text{N/m}